FreeBSD/Linux Kernel Cross Reference
sys/netipsec/keydb.h
1 /* $FreeBSD$ */
2 /* $KAME: keydb.h,v 1.14 2000/08/02 17:58:26 sakane Exp $ */
3
4 /*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #ifndef _NETIPSEC_KEYDB_H_
34 #define _NETIPSEC_KEYDB_H_
35
36 #ifdef _KERNEL
37
38 #include <netipsec/key_var.h>
39
40 /*
41 * The union of all possible address formats we handle.
42 */
43 union sockaddr_union {
44 struct sockaddr sa;
45 struct sockaddr_in sin;
46 struct sockaddr_in6 sin6;
47 };
48
49 /* Security Assocciation Index */
50 /* NOTE: Ensure to be same address family */
51 struct secasindex {
52 union sockaddr_union src; /* srouce address for SA */
53 union sockaddr_union dst; /* destination address for SA */
54 u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */
55 u_int8_t mode; /* mode of protocol, see ipsec.h */
56 u_int32_t reqid; /* reqid id who owned this SA */
57 /* see IPSEC_MANUAL_REQID_MAX. */
58 };
59
60 /* Security Association Data Base */
61 struct secashead {
62 LIST_ENTRY(secashead) chain;
63
64 struct secasindex saidx;
65
66 struct sadb_ident *idents; /* source identity */
67 struct sadb_ident *identd; /* destination identity */
68 /* XXX I don't know how to use them. */
69
70 u_int8_t state; /* MATURE or DEAD. */
71 LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1];
72 /* SA chain */
73 /* The first of this list is newer SA */
74
75 struct route sa_route; /* route cache */
76 };
77
78 struct xformsw;
79 struct enc_xform;
80 struct auth_hash;
81 struct comp_algo;
82
83 /* Security Association */
84 struct secasvar {
85 LIST_ENTRY(secasvar) chain;
86
87 u_int refcnt; /* reference count */
88 u_int8_t state; /* Status of this Association */
89
90 u_int8_t alg_auth; /* Authentication Algorithm Identifier*/
91 u_int8_t alg_enc; /* Cipher Algorithm Identifier */
92 u_int8_t alg_comp; /* Compression Algorithm Identifier */
93 u_int32_t spi; /* SPI Value, network byte order */
94 u_int32_t flags; /* holder for SADB_KEY_FLAGS */
95
96 struct sadb_key *key_auth; /* Key for Authentication */
97 struct sadb_key *key_enc; /* Key for Encryption */
98 caddr_t iv; /* Initilization Vector */
99 u_int ivlen; /* length of IV */
100 void *sched; /* intermediate encryption key */
101 size_t schedlen;
102
103 struct secreplay *replay; /* replay prevention */
104 long created; /* for lifetime */
105
106 struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */
107 struct sadb_lifetime *lft_h; /* HARD lifetime */
108 struct sadb_lifetime *lft_s; /* SOFT lifetime */
109
110 u_int32_t seq; /* sequence number */
111 pid_t pid; /* message's pid */
112
113 struct secashead *sah; /* back pointer to the secashead */
114
115 /*
116 * NB: Fields with a tdb_ prefix are part of the "glue" used
117 * to interface to the OpenBSD crypto support. This was done
118 * to distinguish this code from the mainline KAME code.
119 */
120 struct xformsw *tdb_xform; /* transform */
121 struct enc_xform *tdb_encalgxform; /* encoding algorithm */
122 struct auth_hash *tdb_authalgxform; /* authentication algorithm */
123 struct comp_algo *tdb_compalgxform; /* compression algorithm */
124 u_int64_t tdb_cryptoid; /* crypto session id */
125 };
126
127 /* replay prevention */
128 struct secreplay {
129 u_int32_t count;
130 u_int wsize; /* window size, i.g. 4 bytes */
131 u_int32_t seq; /* used by sender */
132 u_int32_t lastseq; /* used by receiver */
133 caddr_t bitmap; /* used by receiver */
134 int overflow; /* overflow flag */
135 };
136
137 /* socket table due to send PF_KEY messages. */
138 struct secreg {
139 LIST_ENTRY(secreg) chain;
140
141 struct socket *so;
142 };
143
144 #ifndef IPSEC_NONBLOCK_ACQUIRE
145 /* acquiring list table. */
146 struct secacq {
147 LIST_ENTRY(secacq) chain;
148
149 struct secasindex saidx;
150
151 u_int32_t seq; /* sequence number */
152 long created; /* for lifetime */
153 int count; /* for lifetime */
154 };
155 #endif
156
157 /* Sensitivity Level Specification */
158 /* nothing */
159
160 #define SADB_KILL_INTERVAL 600 /* six seconds */
161
162 /* secpolicy */
163 extern struct secpolicy *keydb_newsecpolicy __P((void));
164 extern void keydb_delsecpolicy __P((struct secpolicy *));
165 /* secashead */
166 extern struct secashead *keydb_newsecashead __P((void));
167 extern void keydb_delsecashead __P((struct secashead *));
168 /* secasvar */
169 extern struct secasvar *keydb_newsecasvar __P((void));
170 extern void keydb_refsecasvar __P((struct secasvar *));
171 extern void keydb_freesecasvar __P((struct secasvar *));
172 /* secreplay */
173 extern struct secreplay *keydb_newsecreplay __P((size_t));
174 extern void keydb_delsecreplay __P((struct secreplay *));
175 /* secreg */
176 extern struct secreg *keydb_newsecreg __P((void));
177 extern void keydb_delsecreg __P((struct secreg *));
178
179 #endif /* _KERNEL */
180
181 #endif /* _NETIPSEC_KEYDB_H_ */
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